Nikon Tilt-Shift 3.5/55mm prototype

Very interesting and most probably a unique Nikkor lens 3.5/55mm (?) prototype for Nikon F, with tilt-shift controls, unusual aperture setting, the focus ring design (with tick marks) is similar to the 2/5cm, unusual in meter scale, 'T-1553' (probably for Tilt and 5,5cm) engraved on the front ring, without another lens reference, in near-mint condition, focus at infinity is not correct, optics showing cleaning marks and some haze, it might be the only existing example, especially knowing Nikon’s policy to destroy any prototypes they have made so they couldn’t end up in a competitor’s hands and taken apart to be studied, with very rare original NKJ blue rear cap - known from the other existing prototypes.